设
,
是两条不同的直线,
,
是两个不同的平面,给出下列命题,其中正确的命题为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
更新时间:2023-09-03 22:55:02
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【推荐1】如图,在正方体
中,
为
的中点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/4abd2c45-fb30-4200-82ae-6be78d26fbab.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/4abd2c45-fb30-4200-82ae-6be78d26fbab.png?resizew=151)
A.![]() ![]() |
B.![]() ![]() |
C.平面![]() ![]() |
D.直线![]() ![]() ![]() |
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【推荐2】在棱长为2的正方体
中,
与
交于点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() ![]() ![]() |
B.![]() ![]() |
C.![]() ![]() ![]() |
D.三棱锥![]() ![]() |
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【推荐1】已知m,n,l是三条不同的直线.
,
,
是三个不同的平面,则下列命题不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() |
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解题方法
【推荐2】设
,
是两条不同直线,
,
,
是三个不同平面,下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若![]() ![]() ![]() ![]() | B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() | D.若![]() ![]() ![]() ![]() |
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【推荐1】下图是一个正方体的平面展开图,则在该正方体中( )
![](https://img.xkw.com/dksih/QBM/2021/6/27/2752289381244928/2793148373753856/STEM/ed6339dd-dd5d-46ca-b5d8-3b15c43e1e8f.png?resizew=254)
![](https://img.xkw.com/dksih/QBM/2021/6/27/2752289381244928/2793148373753856/STEM/ed6339dd-dd5d-46ca-b5d8-3b15c43e1e8f.png?resizew=254)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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【推荐2】如图所示,在四棱锥
中,
是边长为2的正三角形,点
为正方形
的中心,
为线段
的中点,
则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/dd785b6b-af8b-4cd6-93a1-d8129980f5dd.png?resizew=217)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/dd785b6b-af8b-4cd6-93a1-d8129980f5dd.png?resizew=217)
A.直线![]() ![]() |
B.线段![]() ![]() |
C.直线![]() ![]() |
D.直线![]() ![]() ![]() |
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【推荐1】下列命题中,真命题为( )
A.若![]() ![]() ![]() ![]() ![]() |
B.若两条直线![]() ![]() ![]() |
C.若直线与平面平行,则这条直线与平面内的直线平行或异面. |
D.若直线上有无数个点不在平面内,则直线和平面平行 |
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解题方法
【推荐2】下列说法中正确的是( )
A.已知两直线![]() ![]() ![]() |
B.若直线![]() ![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() |
D.若直线![]() ![]() ![]() ![]() |
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